On Mon, Jan 12, 2015 at 7:26 PM, Marc Zyngier [off-list ref] wrote:

IMX6 has been (ab)using the gic_arch_extn to provide
wakeup from suspend, and it makes a lot of sense to convert
this code to use stacked domains instead.

This patch does just this, updating the DT files to actually
reflect what the HW provides.

BIG FAT WARNING: because the DTs were so far lying by not
exposing the fact that the GPC block is actually the first
interrupt controller in the chain, kernels with this patch
applied wont have any suspend-resume facility when booted
with old DTs, and old kernels with updated DTs won't even boot.

Tested-by: Stefan Agner <stefan@agner.ch>
Acked-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Marc Zyngier <redacted>

(...)

+static int imx_gpc_domain_alloc(struct irq_domain *domain,
+                                 unsigned int virq,

Nutcase nitpick on this nice patch series: every time I see "virq" my
OCD triggers, as I think the "v" in "virq" stand for virtual. These irqs
are no more virtual than any other Linux irq numbers, hwirq is
more to the point.

I just refer to these as "irq" (sans "v") in any code I write.

Yours,
Linus Walleij